MartinH2
Member
- Joined
- Feb 21, 2011
- Messages
- 12
- Reaction score
- 20
I have a 29' Cobra Performance 290SXT (4400lbs) modified V a with Mercury 525, Bravo One XR 1.5:1, and Bravo 1 28P propeller. Originally with the Bravo 1 bouncing off the rev-limiter at 5400rpm I could achieve 89-91mph depending on cargo. I purchased a 5 blade 28P Mercury Maximus (15 5/8 diameter) in efforts to achieve better hole shot and all around performance. With the Maximus I can only reach 78mph at 4900rpm. In order to gain open throttle 5200-5400rmp and regain top end, should I drop to a 26P Maximus or go back to the Bravo? What would a change in diameter (decrease to 15 1/4) do?